Optimal. Leaf size=63 \[ \frac {e^{i c} \sqrt {\pi } \text {Erfi}(b x)^2}{8 b}+\frac {b e^{-i c} x^2 \, _2F_2\left (1,1;\frac {3}{2},2;-b^2 x^2\right )}{2 \sqrt {\pi }} \]
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Rubi [A]
time = 0.04, antiderivative size = 63, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 4, integrand size = 18, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.222, Rules used = {6544, 6513,
6510, 30} \begin {gather*} \frac {b e^{-i c} x^2 \, _2F_2\left (1,1;\frac {3}{2},2;-b^2 x^2\right )}{2 \sqrt {\pi }}+\frac {\sqrt {\pi } e^{i c} \text {Erfi}(b x)^2}{8 b} \end {gather*}
Antiderivative was successfully verified.
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Rule 30
Rule 6510
Rule 6513
Rule 6544
Rubi steps
\begin {align*} \int \cos \left (c-i b^2 x^2\right ) \text {erfi}(b x) \, dx &=\frac {1}{2} \int e^{-i c-b^2 x^2} \text {erfi}(b x) \, dx+\frac {1}{2} \int e^{i c+b^2 x^2} \text {erfi}(b x) \, dx\\ &=\frac {b e^{-i c} x^2 \, _2F_2\left (1,1;\frac {3}{2},2;-b^2 x^2\right )}{2 \sqrt {\pi }}+\frac {\left (e^{i c} \sqrt {\pi }\right ) \text {Subst}(\int x \, dx,x,\text {erfi}(b x))}{4 b}\\ &=\frac {e^{i c} \sqrt {\pi } \text {erfi}(b x)^2}{8 b}+\frac {b e^{-i c} x^2 \, _2F_2\left (1,1;\frac {3}{2},2;-b^2 x^2\right )}{2 \sqrt {\pi }}\\ \end {align*}
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Mathematica [F]
time = 0.41, size = 0, normalized size = 0.00 \begin {gather*} \int \cos \left (c-i b^2 x^2\right ) \text {Erfi}(b x) \, dx \end {gather*}
Verification is not applicable to the result.
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Maple [F]
time = 0.15, size = 0, normalized size = 0.00 \[\int \cos \left (i b^{2} x^{2}-c \right ) \erfi \left (b x \right )\, dx\]
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \cos {\left (i b^{2} x^{2} - c \right )} \operatorname {erfi}{\left (b x \right )}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.02 \begin {gather*} \int \cos \left (c-b^2\,x^2\,1{}\mathrm {i}\right )\,\mathrm {erfi}\left (b\,x\right ) \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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